Apparatus for disintegrating pulp.



, V W. H. STOBIE.

APPARATUS FOR DISINTBGRATING PULP.

APPLIUATION FILED MAR.15, 1913.

Patented June 9, 1914.

{NESSES I INVENT OR WWW JM/f. 14 M 4 I Mi ne OFFICE.

WILLIAM H. STOBIJE, OlE WATERVILLE, MAINE.

PTUS FOR DISINTEGRATING PULP.

Specification of Letters Patent.

Patented June 9, 1914.

Application filed March 15, 1913. Serial No. 754,653.

part of said apparatus.

The object of the invention is to simplify and cheapen the cost of construction of the targets, and it consists in the details of construction as will be more fully described and pointed out in the claims.

The accompanying drawing is a view in section of the target showing the pulp discharge nozzles through which the pulp is projected against the target.

In apparatus wherein these targets are used, the paper stock which has previously been mixed with a proper proportion of water to reduce it to a consistency where it can be readily pumped and conveyed through pipes to the nozzles, is pumped and forcibly ejected through nozzles against a target having a serrated or roughened face for the purpose of disintegrating the fiber and putting it in proper condition for effective felting. These targets have heretofore been made of metal, and also of stone, and when made of stone have been in one integral piece.

My present invention is designed to simplify and cheapen the cost of production and repair of the targets, and it consists of a metal frame 1, either square, rectangular or circular into which blocks 2 of sand-stone,

basalt, carborundum or any other suitable stone or material are placed and secured by cement or otherwise. The frame 1 is provided at its outer edge or periphery with a flange 3 which latter is undercut as shown, and the end blocks at the sides, or periphery as the case may be, are correspondingly beveled to take under the flanges 3. The blocks may be of any size but are preferably so shaped at their edges to make close joints with the adjacent blocks and they are all secured together by cement or any other suitable binder. The natural surfaces of unsmoothed blocks may be used, but the best results are obtained by having the surfaces roughened by grooves more or less pronounced according to the stock used and results desired. The target so constructed is employed in connection with a plurality of nozzles 4 which latter discharge the stock upwardly at an incline against the roughened faces of the blocks, the contact of the stock with the stone slab operating to separate and disintegrate the fibers without cutting or shortening them.

If desired the target may be set at a slight inclination and the nozzles be horizontal and so placed with relation to the target that the pulp will strike the latter tangentially, and, under its impetus from the nozzle, move in contact with the target for some little distance before falling back into the vat in which the target is usually located. Again the target is of such size that it can be moved sidewise to present new working surfaces to the pulp streams, there by permitting the whole surface of the target to be used up before removing it for renewal or repairs. v

It is evident that many slight changes might be resorted to in the relative arrangement of parts shown and described without departing from the spirit and scope of my invention. Hence I would have it understood that I do not wish to confine myself to the exact construction and arrangement of parts shown and described, but

Having fully described my invention what llclaim as new and desire to secure by Letters-Patent, is

1. Tn apparatus for disintegrating or dividing fibrous stock, a target against which the pulp is projected, consisting of a frame flanged at its outer edge, and a series of blocks having roughened faces approximately filling the space embraced by the flange, the said blocks being secured together by a binder.

2. Tn apparatus for disintegrating or dividing fibrous stock, the combination of a 2 v 1,099,5 so

frame having a, continuous flange at its In testimony whereof, I have signed this edge, a series of blocks having roughened specification in the presence of two subscribfaces approximately filling the space eming Witnesses.

braced by the flange, the said blocks being WILLIAM STUBIE. united by a binder, and a nozzle for project- Witnesses: ing the stock against the roughened faces HARVEY L. BURRILL,

of the blocks. JosnPH R. Groonwm. 

